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RESEARCH PAPERS

Experimental Study on Seismic Responses of Piping Systems With Friction—Part 2: Simplified Analysis Method on the Effect of Friction

[+] Author and Article Information
H. Kobayashi, R. Yokoi, T. Chiba

Ishikawajima-Harima Heavy Industries Co., Ltd., 1, Shin-Nakahara-Cho, Isogu-ku, Yokohama 235, Japan

K. Suzuki

Tokyo Metropolitan University, Tokyo, Japan

N. Shimizu

Iwaki Meisei University, Fukushima, Japan

C. Minowa

National Research Institute for Earth Science and Disaster Prevention, Ibaraki, Japan

J. Pressure Vessel Technol 117(3), 250-255 (Aug 01, 1995) (6 pages) doi:10.1115/1.2842119 History: Received January 15, 1993; Revised November 28, 1994; Online February 11, 2008

Abstract

Friction between pipe and support structure is generally known to reduce seismic response of the piping systems. Vibration tests using large-scale piping model with friction support were carried out to evaluate the reduction effect. The piping response was mainly governed by the first modal deformation. The simplified analysis method based on linear response spectrum analysis was developed and confirmed to be applicable. In this method, the reduction effect by friction is treated as equivalent viscous damping ratio. This paper deals with the analysis method, and the comparison between the experimental results and analytical ones.

Copyright © 1995 by The American Society of Mechanical Engineers
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